One source claims the 18-year-old was actually bullied for being there -- apparently not everyone thought she earned the right to walk the shows!
The insider spilled:
Just when we thought she couldn't do any worse than yesterday, Rachel McAdams went and proved us wrong.
The actress found herself at the Sleeping Beauty premiere in Cannes on Thursday wearing slacks and a bustier top both by Monique Lhuillier.
This is just all sorts of wrong we don't know where to begin.
First of all this isn't just another premiere, it's Cannes. All the other celebs were wearing fancy dresses and makes Rachel look out of place.
Second, it's too much of one color. And lastly, just NO!
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[Image via WENN.]